# Superhuman gradient

Gradients derived from Superhuman's published colour tokens (nominative use; no brand assets). Deterministic: the same values are served as `--brand-gradient*` in the brand's brand.css.

- Page: https://brandsweets.com/gradients/brands/superhuman-com
- Brand colors: https://brandsweets.com/colors/brands/superhuman-com · Brand page: https://brandsweets.com/b/superhuman-com
- Palette: primary #441c24, secondary #421d24, accents #714cb6
- Source: https://superhuman.com (extracted 2026-09-02)

## Brand gradient

ΔE_OK 0.005 < 0.15 between #441c24 and #421d24 — a 2-stop would read as a flat fill, so this is a tonal ramp of #441c24.

- CSS: `linear-gradient(135deg in oklch shorter hue, #794b53 0%, #441c24 50%, #130002 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#794b53] via-[#441c24] to-[#130002]`
- Contrast (worst point): white 7.13:1 AA · black 1.03:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.794b53-441c24-130002?a=135&in=oklch&hue=shorter

## Hero background

Chroma ×0.35 so it can carry text; ink white (inkFor at the midpoint). Passes AA for that ink at the worst point (6.99:1) without adjusting L.

- CSS: `linear-gradient(135deg in oklch shorter hue, #665558 0%, #352628 50%, #0b0404 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#665558] via-[#352628] to-[#0b0404]`
- Contrast (worst point): white 6.99:1 AA · black 1.03:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.665558-352628-0b0404?a=135&in=oklch&hue=shorter

## Button / CTA

ΔL 0.08 top→bottom in the primary's hue (a lit surface, not a rainbow); hover L +0.03, active L −0.03. White ink passes AA on the surface and both states (worst 11.31:1).

- CSS: `linear-gradient(180deg in oklch shorter hue, #4f262e 0%, #39121b 100%)`
- Tailwind: `bg-linear-to-b/oklch from-[#4f262e] to-[#39121b]`
- Contrast (worst point): white 12.73:1 AA · black 1.28:1 fail · banding high · ink #ffffff
- Maker: https://brandsweets.com/gradients/new/v1.4f262e-39121b?a=180&in=oklch&hue=shorter
- Hover: `linear-gradient(180deg in oklch shorter hue, #582e35 0%, #411922 100%)`
- Active: `linear-gradient(180deg in oklch shorter hue, #471f26 0%, #310a14 100%)`

## Tonal ramp

- CSS: `linear-gradient(135deg in oklch shorter hue, #794b53 0%, #441c24 50%, #130002 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#794b53] via-[#441c24] to-[#130002]`
- Contrast (worst point): white 7.13:1 AA · black 1.03:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.794b53-441c24-130002?a=135&in=oklch&hue=shorter

## Analogous

Partner hue from the analogous rule at the source colour's lightness.

- CSS: `linear-gradient(135deg in oklab, #441c24 0%, #401c36 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#441c24] to-[#401c36]`
- Contrast (worst point): white 14.58:1 AA · black 1.43:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.441c24-401c36?a=135

## Complementary

Partner hue from the complementary rule at the source colour's lightness. ΔH 179° > 140° — interpolating in oklch (shorter hue) keeps the midpoint saturated.

- CSS: `linear-gradient(135deg in oklch shorter hue, #441c24 0%, #1a2f2d 100%)`
- Tailwind: `bg-linear-to-br/oklch from-[#441c24] to-[#1a2f2d]`
- Contrast (worst point): white 13.99:1 AA · black 1.43:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.441c24-1a2f2d?a=135&in=oklch&hue=shorter

## Triadic

Partner hue from the triadic rule at the source colour's lightness.

- CSS: `linear-gradient(135deg in oklab, #441c24 0%, #242f18 100%)`
- Tailwind: `bg-linear-to-br/oklab from-[#441c24] to-[#242f18]`
- Contrast (worst point): white 14.01:1 AA · black 1.44:1 fail · banding high
- Maker: https://brandsweets.com/gradients/new/v1.441c24-242f18?a=135

## CSS custom properties (brand.css)

```css
:root {
  /* Brand gradient (derived) */
  /* worst-case contrast: white 7.13:1 AA, black 1.03:1 */
  --brand-gradient: linear-gradient(135deg in oklch shorter hue, #794b53 0%, #441c24 50%, #130002 100%);
  /* hero — worst-case contrast: white 6.99:1 AA, black 1.03:1; ink passes AA at the worst point */
  --brand-gradient-hero: linear-gradient(135deg in oklch shorter hue, #665558 0%, #352628 50%, #0b0404 100%);
  --brand-gradient-hero-ink: #ffffff;
  /* button — worst-case contrast: white 12.73:1 AA, black 1.28:1 */
  --brand-gradient-button: linear-gradient(180deg in oklch shorter hue, #4f262e 0%, #39121b 100%);
  --brand-gradient-button-hover: linear-gradient(180deg in oklch shorter hue, #582e35 0%, #411922 100%);
  --brand-gradient-button-active: linear-gradient(180deg in oklch shorter hue, #471f26 0%, #310a14 100%);
  --brand-gradient-button-ink: #ffffff;
}
```

## Gradient maker

Every maker URL is the gradient's state: `/gradients/new/v1.<hex>-<hex>[_pos]?a=135&in=oklch&hue=shorter&e=soft&g=8`. Hand one to a human, let them refine, and read the link they return.

## Connect an agent

Point any MCP client at the BrandSweets gradients endpoint for the same engine and corpus:

- Endpoint: https://mcp.brandsweets.com/gradients/mcp
- Tools: `make_gradient` (2–5 colours → CSS with the interpolation space, Tailwind v4, SVG, PNG URL, DTCG token + the contrast/banding/gamut report), `brand_gradients` (brand slug or palette → brand gradient, hero, button, variants).
- Resource: `gradients://corpus` — the whole bundled corpus as JSON.